WO2020029257A1 - 定子铁芯及其加工方法 - Google Patents

定子铁芯及其加工方法 Download PDF

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Publication number
WO2020029257A1
WO2020029257A1 PCT/CN2018/099996 CN2018099996W WO2020029257A1 WO 2020029257 A1 WO2020029257 A1 WO 2020029257A1 CN 2018099996 W CN2018099996 W CN 2018099996W WO 2020029257 A1 WO2020029257 A1 WO 2020029257A1
Authority
WO
WIPO (PCT)
Prior art keywords
teeth
single tooth
stator core
tooth
coil
Prior art date
Application number
PCT/CN2018/099996
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
王雨婷
Original Assignee
西门子股份公司
王雨婷
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 西门子股份公司, 王雨婷 filed Critical 西门子股份公司
Priority to US17/265,545 priority Critical patent/US20210296953A1/en
Priority to PCT/CN2018/099996 priority patent/WO2020029257A1/zh
Priority to EP18929172.7A priority patent/EP3820023A4/de
Priority to CN201880094879.7A priority patent/CN112313858A/zh
Publication of WO2020029257A1 publication Critical patent/WO2020029257A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/325—Windings characterised by the shape, form or construction of the insulation for windings on salient poles, such as claw-shaped poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/06—Embedding prefabricated windings in machines
    • H02K15/062—Windings in slots; salient pole windings
    • H02K15/065—Windings consisting of complete sections, e.g. coils, waves
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/18—Windings for salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/48—Fastening of windings on the stator or rotor structure in slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/15—Sectional machines

Definitions

  • the invention relates to the field of electric machines, in particular to a stator core and a processing method thereof.
  • the current motor manufacturing process has developed a single-tooth rounding process or other structures that can be easily wound on a single tooth.
  • FIG. 1 shows a partial schematic diagram of the prior art when two adjacent single teeth of a stator core are spliced.
  • the numbers 1 to 85 marked on each turn indicate the winding order of the turns.
  • the arrangement of the coils in the single-toothed wire receiving slot on the left side and the arrangement of the coils in the single-toothed wire receiving slot on the right side are completely the same, that is, symmetrical to each other.
  • the present invention proposes a new type of stator core structure and a processing method thereof.
  • a stator core including: a plurality of first single teeth, a plurality of second single teeth, and a coil, wherein the first single teeth and the second single teeth are both I-shaped and Having a long side, a short side, a connecting portion, and a wire receiving groove located on both sides of the connecting portion, and the coil is wound around the connecting portion and formed in the wire receiving groove,
  • stator core is a ring-shaped member composed of a first single tooth and a second single tooth staggered in order
  • the winding manners of the coils on the first single tooth and the coils on the second single tooth are different from each other, so that the outer contour of the coils on the outside of the tolerance groove of the first single tooth and the The contours of the coils on the outside of the cable receiving slot are inconsistent with each other.
  • the above-mentioned staggered arrangement and the structure of the outer coil profile are inconsistent can further improve the slot full rate of the motor.
  • a contour of the coil outside the capacity slot of the first single tooth and a contour of the coil outside the capacity slot of the second single tooth match each other. Matching with each other can make fuller use of the space of the combined part of the adjacent single-tooth wire-groove, and improve the groove full rate.
  • a winding manner of the coil on the first single tooth and the coil on the second single tooth is different only in that: the first single tooth and the first The winding manners of the two single-tooth coils located on the outermost sides of the respective cable receiving slots are different from each other.
  • This winding method can realize the technical effect of the present invention by modifying the program of the existing winding device less.
  • an insulating layer is attached to a slot wall of the first single-tooth and second single-tooth wire receiving slot, so that the first single-tooth and The second single tooth is electrically insulated from the coils thereon.
  • an insulating spacer is provided between the adjacent first single teeth and the second single tooth, and the length of the insulating spacer is greater than the capacity line.
  • the slot has a slot width, and the insulating spacer is made of a flexible material. Flexible insulation spacers can be arranged along the contour of the coil to make certain bends, which has a better insulation effect.
  • the first single tooth and the second single tooth are formed by laminating multiple layers of silicon steel sheets.
  • a method for processing a stator core including:
  • a coil is wound on a plurality of second single teeth in a second winding manner, wherein the first winding manner is different from the second winding manner and an outer coil profile of the first single tooth and the first The contours of the outer coils of the two single teeth are inconsistent with each other;
  • a ring-shaped stator core is formed by staggering the first single teeth and the second single teeth in turn.
  • the first winding mode and the second winding mode are different only in the outer coil contours of the first single tooth and the second single tooth.
  • the winding manners of several turns of coils are different from each other.
  • the processing method before the step of winding the coil, further includes: placing a wire groove on the first single tooth and / or the second single tooth An insulating layer is attached to the groove wall.
  • the method in the above-mentioned processing method, in the step of forming a ring-shaped stator core in a manner that the first single tooth and the second single tooth are alternately staggered and circled, the method further includes :
  • an insulating spacer is provided between adjacent first and second single teeth, wherein the length of the insulating spacer is greater than the capacity line of the first and second single teeth.
  • the slot has a slot width, and the insulating spacer is made of a flexible material.
  • FIG. 1 shows a partial schematic diagram of two adjacent single teeth of a stator core of the prior art. .
  • FIG. 2 shows a schematic diagram of an embodiment of a stator core according to the present invention.
  • FIG. 3 shows a partial schematic diagram of two adjacent single teeth in the embodiment of FIG. 2.
  • FIG. 4 is a schematic diagram of a winding manner of a first single tooth in the embodiment of FIG. 2.
  • FIG. 5 is a schematic diagram of a winding manner of a second single tooth in the embodiment of FIG. 2.
  • the stator core 10 of the present invention mainly includes a plurality of first single teeth 11, a plurality of second single teeth 12, and a coil 13.
  • the first single tooth 11 and the second single tooth 12 are formed by laminating multiple layers of silicon steel sheets.
  • the stator core 10 has six first single teeth 11 and six second single teeth 12.
  • stator core 10 is a ring-shaped member composed of a first single tooth and a second single tooth that are alternately intertwined.
  • stator core 10 is configured in such a manner that a single first single tooth and a single second single tooth are staggered with each other, as shown in FIG. 2.
  • the shapes of the first single tooth 11 and the second single tooth 12 are basically the same, that is, they are both I-shaped and have long sides 111, 121; short sides 112, 122; the connecting portions 113 and 123 and the wire receiving grooves 114 and 124 on both sides of the connecting portion.
  • the connecting portions 113 and 123 are connected between the long sides 111 and 121 and the short sides 112 and 122 to form an I-shape as shown in FIGS. 4 and 5.
  • the coil 13 is wound around the connecting portions 113 and 123 and is received in the wire receiving grooves 114 and 124.
  • the winding manners of the coils on the first single-tooth 11 and the coils on the second single-tooth 12 are different from each other, so that the outer contour of the coils of the first single-tooth 11 and the second single-tooth 12
  • the outlines of the coils on the outside of the wire receiving groove 124 do not coincide with each other.
  • the top and bottom of the outer coil profile of the first single tooth 11 on the left side are recessed inward, and the middle part projects outward; meanwhile, the second single tooth on the right side is outward.
  • the top and bottom of the outer coil profile of 12 protrude outward, respectively, and the middle part is recessed inward.
  • the outer coil profile of the present invention is not limited to this.
  • the outline of the coil outside the tolerance groove of the first single-tooth 11 and the outline of the coil outside the tolerance groove of the second single-tooth 12 match each other, that is, between adjacent first and second single-tooth 11 and 12 are allowed. It can fit tightly and obtain high space utilization efficiency.
  • the above-mentioned staggered arrangement and the structure of the outer coil profile are inconsistent can further improve the slot full rate of the motor.
  • the number of winding turns (total 88 turns) in the embodiment of the present invention can be greater than that obtained by the single-tooth rounding process of the prior art (FIG. 1 (Shown) for a total of 85 turns. That is, after using the asymmetrical arrangement design of adjacent single-toothed coils on the basis of the coils of FIG. 1, each coil can have three more rows and each slot can have six more rows.
  • the winding manners of the coil 13 on the first single tooth 11 and the coil 13 on the second single tooth 12 may differ only in that the first single tooth 11 and the second single tooth 12 are located at their respective tolerance lines.
  • the winding methods of the outermost turns of the slot are different from each other.
  • the numbers marked on some turns in Fig. 4 and Fig. 5 also indicate the winding order of the turns of the coil.
  • FIG. 4 and FIG. 5 it can be seen that the positions of the same number of turns adjacent to the connecting portions 113 and 123 are the same, but the positions of the same number of turns are only different from each other at the outermost part of the capacity groove, for example, as shown in FIG. 4.
  • the positions of the turns 72, 86, and 87 are different from the positions of the turns 72, 86, and 87 in FIG. 5.
  • Such an arrangement can be achieved by slightly changing the winding program, making the present invention easier to apply to the existing processing technology.
  • an insulating layer 15 may be attached to the groove walls of the wire receiving grooves 114 and 124 of the first single tooth 11 and the second single tooth 12 so that the first single tooth 11 and the second single tooth 12 have the same coil thereon. 13 are electrically insulated from each other.
  • one or more insulating spacers 14 may be provided between adjacent first single teeth 11 and second single teeth 12, so that they can be arranged along the contour of the coil to make certain bends. .
  • the length of the insulating spacer 14 is greater than the slot width of the cable receiving slot, and the insulating spacer 14 is made of a flexible material so as to adapt to the above-mentioned inconsistent outer coil profile.
  • the above-mentioned insulating layer 15 and the insulating spacer 14 may also be omitted.
  • the groove full ratio can be further improved.
  • the above-mentioned processing method of the stator core 10 mainly includes: winding a coil on a plurality of first single teeth by a first winding method (step 1); and winding a plurality of second single teeth by a second winding method. Winding the upper coil (step 2), wherein the first winding mode is different from the second winding mode and the outer coil profile of the first single tooth and the outer coil profile of the second single tooth are inconsistent with each other; and the first single tooth and The second single teeth are sequentially staggered to form a circular stator core (step 3).
  • the implementation order of step 1 and step 2 is not limited, that is, step 1 and step 2 may be performed at the same time, or step 2 may be performed first.
  • the difference between the first winding method and the second winding method mentioned in step 1 and step 2 is, for example, only that: a few turns at the outer coil contour of the first single tooth and the second single tooth
  • the coils are wound in different ways.
  • the insulating layer when an insulating layer is required to be attached, the insulating layer may be attached to the groove wall of the first single-tooth and / or second single-tooth wire receiving groove before the coil winding steps of steps 1 and 2 described above. Subsequently, during the rounding process, the above-mentioned insulating spacer is further provided between adjacent first single teeth and second single teeth.
  • stator core and the processing method of the present invention can effectively improve the slot full rate of the motor, thereby improving the power density of the motor.
  • implementation of the present invention does not need to change the hardware of an existing winding device, and can be implemented only by appropriately adjusting the winding program of the winding device, so the implementation cost is low.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Windings For Motors And Generators (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
PCT/CN2018/099996 2018-08-10 2018-08-10 定子铁芯及其加工方法 WO2020029257A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US17/265,545 US20210296953A1 (en) 2018-08-10 2018-08-10 Stator core and processing method therefor
PCT/CN2018/099996 WO2020029257A1 (zh) 2018-08-10 2018-08-10 定子铁芯及其加工方法
EP18929172.7A EP3820023A4 (de) 2018-08-10 2018-08-10 Statorkern und verarbeitungsverfahren dafür
CN201880094879.7A CN112313858A (zh) 2018-08-10 2018-08-10 定子铁芯及其加工方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/099996 WO2020029257A1 (zh) 2018-08-10 2018-08-10 定子铁芯及其加工方法

Publications (1)

Publication Number Publication Date
WO2020029257A1 true WO2020029257A1 (zh) 2020-02-13

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Application Number Title Priority Date Filing Date
PCT/CN2018/099996 WO2020029257A1 (zh) 2018-08-10 2018-08-10 定子铁芯及其加工方法

Country Status (4)

Country Link
US (1) US20210296953A1 (de)
EP (1) EP3820023A4 (de)
CN (1) CN112313858A (de)
WO (1) WO2020029257A1 (de)

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Publication number Priority date Publication date Assignee Title
CN1521916A (zh) * 2003-02-03 2004-08-18 ��ʽ������Э���������� 旋转电机的电枢、旋转电机、及电枢的制造方法
CN101218731A (zh) * 2006-06-02 2008-07-09 三菱电机株式会社 旋转电力机械的定子
CN103370856A (zh) * 2011-02-14 2013-10-23 三菱电机株式会社 旋转电机的定子及其绕线方法
CN107408859A (zh) * 2015-03-04 2017-11-28 株式会社日立产机系统 轴向间隙型旋转电机和定子

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KR102219610B1 (ko) * 2014-10-16 2021-02-24 주식회사 만도 모터
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Publication number Priority date Publication date Assignee Title
CN1521916A (zh) * 2003-02-03 2004-08-18 ��ʽ������Э���������� 旋转电机的电枢、旋转电机、及电枢的制造方法
CN101218731A (zh) * 2006-06-02 2008-07-09 三菱电机株式会社 旋转电力机械的定子
CN103370856A (zh) * 2011-02-14 2013-10-23 三菱电机株式会社 旋转电机的定子及其绕线方法
CN107408859A (zh) * 2015-03-04 2017-11-28 株式会社日立产机系统 轴向间隙型旋转电机和定子

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Publication number Publication date
EP3820023A4 (de) 2022-01-26
EP3820023A1 (de) 2021-05-12
CN112313858A (zh) 2021-02-02
US20210296953A1 (en) 2021-09-23

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